So I guess I've been shifting wrong

Discussion in 'Freightliner Forum' started by icsheeple, May 15, 2015.

  1. icsheeple

    icsheeple Trailing the Herd

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    Okay. I was taught on a straight ten speed. When I bought my first truck, it came with a 13 speed. I watched some youtube videos and hit the road. Well, seems like every one on youtube is shifting wrong as well.

    Lately I've had some problems with the range selector and have been doing research. In my research I have found I am not shifting correctly. Aside from the range selection which I seem to be doing mostly correct. The only thing I seem to be doing incorrectly with the range selection is not waiting till right before the shift to select the high or low range. Pre-selecting too soon, causes unnecessary friction.

    Okay, now onto splitting gears. I was pre-selecting the splitter before the gear change. Looks like that's wrong. For example: I would shift from 5 high to 6 low by pre-selecting low splitter and then shifting into next gear. The correct way as it seems is to shift from 5 high to 6th gear, then select low splitter.

    Another problem of mine is I only double clutched in school and the CDL state exam. First day on the job I was taught how to float the gears, and would only use the clutch to get out of a gear if it was bound up say going down a hill and already off the throttle. I think I'll start to incorporate the clutch a lot more.

    My range selection issue has been there since I bought the truck, and I doubt I could have done anything to prevent its issue. From my research a syncro or clutch disk is out on the back half. I was kinda hoping it was just an air leak in the range selection switch, and simply required a new gasket or O ring. Haven't taken it to a shop yet. From what I hear I can just continue to drive it like that and it's just something I have to deal with until it just won't work at all.

    Here's a video of a proper high gear split shift I found that seems to make everyone else on youtube wrong.



    Anyone have a really good experience in Kansas City with a transmission mechanic?? I might be in the market soon.....Seems like the days my equipment isn't working correctly are the days I miss holding the wheel for a company.
     
    blairandgretchen Thanks this.
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  3. blairandgretchen

    blairandgretchen Road Train Member

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    OK - just watched the other bald headed guy who is apparently mis informed (in the other video).

    I've only juuuuust gotten comfortable with the 13 after nearly three months driving it, I struggled with the RPM range of the older engine compared to the newer gear I was used to, and the age of the transmission.

    Apparently I'd been doing it correctly, pre - selecting only immediately before the shift, or split - but wasn't aware this was 'correct' or 'incorrect'.

    Did learn it DOES NOT like range being changed in neutral, just once, when I had a fluster cluck moment.

    I didn't understand the Road ranger guy - direct and overdrive? Does he mean the back and front hole splitter position? Never driven an 18 speed however.

    I still float up in all gears, and double clutch down, 90% of the time - that's just how I habitually shift.

    Interesting.

    Can't help you on a transmission guy in the area - fortunately haven't crossed that bridge yet.
     
    icsheeple Thanks this.
  4. icsheeple

    icsheeple Trailing the Herd

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    Direct is low, OD is high on the splitter. Only difference for the 18 speed is you can split the low range gears.

    The biggest mistake I guess I'm making is I'd grab the low splitter before a gear change. I'll be trying the correct method on my next trip. Grabbing the next gear then splitting from OD back to direct before engaging clutch. Hopefully without making big loud grinds and bangs....
     
  5. blairandgretchen

    blairandgretchen Road Train Member

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    Yeah - might try that for gits and shiggles too.

    Oh - wait a minute - lightbulb.

    There is a littl raking sound when I shift - maybe that's it. Will investigate.

    This thing is so old, it talks to me. I've been ignoring that comment from her thus far.
     
    icsheeple Thanks this.
  6. dannythetrucker

    dannythetrucker Road Train Member

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    I've been doing it "wrong" for 20 years.
     
    blairandgretchen and icsheeple Thank this.
  7. dustinbrock

    dustinbrock Road Train Member

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    well ####. seems I'm straight rookie here, I've been doing it wrong too.

    I question this a little though, for this to work you would absolutely have to be clutching between shifts otherwise when I pop from 6hi to 7hi then quickly flip the splitter back to 7lo that tranny is gonna clunk like a son of a ........

    I never flip the splitter then shift though either, it's #### near coming out of gear when I flip that splitter back.
     
    icsheeple Thanks this.
  8. Steve62

    Steve62 Light Load Member

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    Well I guess I do not know how to drive at all. I never use the clutch except to start or stop. I run a 18 speed, it has not fallen out of the truck yet lol.
     
  9. 315wheelbase

    315wheelbase Heavy Load Member

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    On a 13spd you can pre-select the range button (hi-lo range) preselecting the splitter in hi-range will damage the transmission,,only split in hi range when you are ready to change the gear,,the same applies to 18spds in low range do not preselect the splitter.
    Pre -select means moving the range button before you are ready to change the gear.
    It is OK to do it to change ranges because it will not happed until you move the gear shift in or out of gear going thru neutral.
     
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